Hi there,

I was just wondering if anybody knew what would happen to a craft travelling at light speed as it passed the event horizon of a black hole. I know I've read about it before but can't remember exactly where. If anyone had any ideas on where to find any information like this it would be a great help.

Thanks everybody

I don't know where to find out more info on it, but I suppose i can ponder on it.

Regardless of the mass (ship per say) anything that gets to the event horizon is in a damn near impossible escape. And at this point gravity holds the time clock still.
As well as with the speed of light, holds the clock still. I couldn't imagine you could multiply the effect by combining the two.

I probably am wrong. But i figure the when approaching the black hold the speed that you would hit it. You wouldn't feel the gravity till you where on your way away and it had a slowing affect on your ship.

But Hell i am probably wrong here again.

Damn interested thing to ponder.

http://math.ucr.edu/home/baez/physics/Rela...es/fall_in.html

OK, that link does clear up a few things, but here are a couple of points that it doesn't address satisfactorily:

1) you never see anything else ever cross an event horizon, so if you're falling in feet first, you never see your feet cross it. Does this mean that you see your feet meet the horizon at the instant you hit the singularity?

2) if matter can cross the event horizon (in the above example, me falling in feet first), then surely at some point my feet can't causally communicate with my ankles any more, so every extended object that comprises my body is torn apart as it crosses the event horizon (as the bit just in front recedes "faster than c", in that frame). In this sense, is it even physically reasonable to talk about anything other than fundamental particles crossing the horizon?

Discussion welcome!

I do enjoy a good conversation on black holes!
I had read THE BLACK HOLE WAR by Leonard Susskind, and read a very interesting part. It was talking about the effect of gravity being canceled out by the falling of the object- like in an elevator going down- But this did not make sense, wouldn't the object have to be "falling" into the black hole at great speeds?

Its been a while since I read that, so my apologies if I recalled it incorrectly

Ha! I just finished that book like 2 mo. ago. It was a good read, but the holographic principal bit was way confusing for me.

Gotta love the black holes!!!